./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1ef2080ffd97f82ac51854e7d9813eba864fd0a ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:43:14,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:43:14,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:43:14,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:43:14,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:43:14,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:43:14,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:43:14,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:43:14,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:43:14,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:43:14,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:43:14,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:43:14,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:43:14,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:43:14,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:43:14,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:43:14,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:43:14,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:43:14,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:43:15,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:43:15,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:43:15,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:43:15,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:43:15,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:43:15,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:43:15,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:43:15,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:43:15,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:43:15,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:43:15,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:43:15,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:43:15,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:43:15,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:43:15,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:43:15,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:43:15,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:43:15,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:43:15,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:43:15,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:43:15,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:43:15,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:43:15,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:43:15,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:43:15,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:43:15,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:43:15,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:43:15,112 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:43:15,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:43:15,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:43:15,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:43:15,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:43:15,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:43:15,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:43:15,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:43:15,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:43:15,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:43:15,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:43:15,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:43:15,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:43:15,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:43:15,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:43:15,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:43:15,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:43:15,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:43:15,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:43:15,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:43:15,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:43:15,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:43:15,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:43:15,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:43:15,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:43:15,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-11-29 19:43:15,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:43:15,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:43:15,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:43:15,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:43:15,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:43:15,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-11-29 19:43:15,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/604ceb419/afecf303e92d4e26a6dc48b02a4e683b/FLAG0298650c1 [2020-11-29 19:43:16,178 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:43:16,180 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-11-29 19:43:16,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/604ceb419/afecf303e92d4e26a6dc48b02a4e683b/FLAG0298650c1 [2020-11-29 19:43:16,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/604ceb419/afecf303e92d4e26a6dc48b02a4e683b [2020-11-29 19:43:16,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:43:16,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:43:16,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:43:16,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:43:16,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:43:16,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:16,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22466faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16, skipping insertion in model container [2020-11-29 19:43:16,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:16,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:43:16,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:43:16,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:43:16,896 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:43:16,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:43:16,985 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:43:16,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16 WrapperNode [2020-11-29 19:43:16,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:43:16,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:43:16,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:43:16,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:43:16,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:43:17,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:43:17,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:43:17,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:43:17,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... [2020-11-29 19:43:17,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:43:17,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:43:17,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:43:17,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:43:17,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:43:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:43:17,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:43:17,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:43:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 19:43:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 19:43:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:43:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:43:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:43:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-29 19:43:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:43:18,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:43:18,175 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-29 19:43:18,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:18 BoogieIcfgContainer [2020-11-29 19:43:18,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:43:18,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:43:18,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:43:18,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:43:18,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:43:16" (1/3) ... [2020-11-29 19:43:18,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1bb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:43:18, skipping insertion in model container [2020-11-29 19:43:18,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:16" (2/3) ... [2020-11-29 19:43:18,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1bb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:43:18, skipping insertion in model container [2020-11-29 19:43:18,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:18" (3/3) ... [2020-11-29 19:43:18,187 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-11-29 19:43:18,200 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:43:18,206 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:43:18,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:43:18,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:43:18,253 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:43:18,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:43:18,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:43:18,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:43:18,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:43:18,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:43:18,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:43:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-29 19:43:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:43:18,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:43:18,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:43:18,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:43:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:43:18,286 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-11-29 19:43:18,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:43:18,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176697851] [2020-11-29 19:43:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:43:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:43:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:43:18,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176697851] [2020-11-29 19:43:18,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:43:18,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:43:18,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774576821] [2020-11-29 19:43:18,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:43:18,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:43:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:43:18,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:43:18,483 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-11-29 19:43:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:43:18,508 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-11-29 19:43:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:43:18,510 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:43:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:43:18,521 INFO L225 Difference]: With dead ends: 109 [2020-11-29 19:43:18,521 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:43:18,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:43:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:43:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 19:43:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 19:43:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-11-29 19:43:18,568 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-11-29 19:43:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:43:18,569 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-11-29 19:43:18,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:43:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-11-29 19:43:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:43:18,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:43:18,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:43:18,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:43:18,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:43:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:43:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-11-29 19:43:18,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:43:18,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797652751] [2020-11-29 19:43:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:43:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:43:18,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:43:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:43:18,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:43:18,817 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:43:18,817 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:43:18,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:43:18,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:43:18 BoogieIcfgContainer [2020-11-29 19:43:18,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:43:18,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:43:18,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:43:18,859 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:43:18,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:18" (3/4) ... [2020-11-29 19:43:18,864 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:43:18,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:43:18,867 INFO L168 Benchmark]: Toolchain (without parser) took 2351.87 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 42.6 MB in the beginning and 69.4 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:43:18,867 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:43:18,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.20 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 42.5 MB in the beginning and 62.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:18,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.86 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 60.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:18,870 INFO L168 Benchmark]: Boogie Preprocessor took 81.56 ms. Allocated memory is still 96.5 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:18,871 INFO L168 Benchmark]: RCFGBuilder took 1018.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 56.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:18,872 INFO L168 Benchmark]: TraceAbstraction took 679.40 ms. Allocated memory is still 96.5 MB. Free memory was 55.9 MB in the beginning and 69.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:43:18,873 INFO L168 Benchmark]: Witness Printer took 5.77 ms. Allocated memory is still 96.5 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:43:18,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.20 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 42.5 MB in the beginning and 62.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.86 ms. Allocated memory is still 96.5 MB. Free memory was 62.8 MB in the beginning and 60.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.56 ms. Allocated memory is still 96.5 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1018.24 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 56.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 679.40 ms. Allocated memory is still 96.5 MB. Free memory was 55.9 MB in the beginning and 69.4 MB in the end (delta: -13.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.77 ms. Allocated memory is still 96.5 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:43:21,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:43:21,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:43:21,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:43:21,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:43:21,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:43:21,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:43:21,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:43:21,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:43:21,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:43:21,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:43:21,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:43:21,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:43:21,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:43:21,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:43:21,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:43:21,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:43:21,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:43:21,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:43:21,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:43:21,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:43:21,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:43:21,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:43:21,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:43:21,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:43:21,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:43:21,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:43:21,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:43:21,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:43:21,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:43:21,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:43:21,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:43:21,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:43:21,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:43:21,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:43:21,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:43:21,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:43:21,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:43:21,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:43:21,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:43:21,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:43:21,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:43:22,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:43:22,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:43:22,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:43:22,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:43:22,012 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:43:22,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:43:22,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:43:22,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:43:22,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:43:22,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:43:22,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:43:22,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:43:22,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:43:22,016 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:43:22,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:43:22,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:43:22,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:43:22,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:43:22,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:43:22,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:43:22,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:43:22,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:43:22,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:43:22,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:43:22,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:43:22,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:43:22,019 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:43:22,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:43:22,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:43:22,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:43:22,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:43:22,021 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1ef2080ffd97f82ac51854e7d9813eba864fd0a [2020-11-29 19:43:22,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:43:22,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:43:22,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:43:22,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:43:22,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:43:22,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-11-29 19:43:22,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/dd07c8601/5752aa28d1004b6184e7f3d4630dec72/FLAG579a38a5f [2020-11-29 19:43:23,138 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:43:23,139 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2020-11-29 19:43:23,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/dd07c8601/5752aa28d1004b6184e7f3d4630dec72/FLAG579a38a5f [2020-11-29 19:43:23,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/data/dd07c8601/5752aa28d1004b6184e7f3d4630dec72 [2020-11-29 19:43:23,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:43:23,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:43:23,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:43:23,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:43:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:43:23,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0dec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23, skipping insertion in model container [2020-11-29 19:43:23,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:43:23,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:43:23,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:43:23,753 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:43:23,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:43:23,888 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:43:23,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23 WrapperNode [2020-11-29 19:43:23,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:43:23,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:43:23,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:43:23,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:43:23,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:43:23,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:43:23,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:43:23,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:43:23,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:23,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:24,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:24,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:24,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... [2020-11-29 19:43:24,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:43:24,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:43:24,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:43:24,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:43:24,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:43:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 19:43:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 19:43:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:43:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:43:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-29 19:43:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 19:43:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:43:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:43:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 19:43:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:43:28,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:43:28,212 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-29 19:43:28,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:28 BoogieIcfgContainer [2020-11-29 19:43:28,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:43:28,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:43:28,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:43:28,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:43:28,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:43:23" (1/3) ... [2020-11-29 19:43:28,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f247cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:43:28, skipping insertion in model container [2020-11-29 19:43:28,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:43:23" (2/3) ... [2020-11-29 19:43:28,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f247cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:43:28, skipping insertion in model container [2020-11-29 19:43:28,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:28" (3/3) ... [2020-11-29 19:43:28,226 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2020-11-29 19:43:28,240 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:43:28,246 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:43:28,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:43:28,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:43:28,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:43:28,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:43:28,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:43:28,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:43:28,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:43:28,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:43:28,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:43:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-29 19:43:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:43:28,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:43:28,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:43:28,311 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:43:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:43:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2020-11-29 19:43:28,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:43:28,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26938347] [2020-11-29 19:43:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 19:43:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:43:29,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:43:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:43:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:43:29,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:43:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:43:29,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26938347] [2020-11-29 19:43:29,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:43:29,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:43:29,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441228783] [2020-11-29 19:43:29,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:43:29,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:43:29,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:43:29,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:43:29,710 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-11-29 19:43:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:43:29,740 INFO L93 Difference]: Finished difference Result 109 states and 191 transitions. [2020-11-29 19:43:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:43:29,741 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:43:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:43:29,753 INFO L225 Difference]: With dead ends: 109 [2020-11-29 19:43:29,754 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:43:29,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:43:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:43:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 19:43:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 19:43:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2020-11-29 19:43:29,806 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2020-11-29 19:43:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:43:29,807 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2020-11-29 19:43:29,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:43:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2020-11-29 19:43:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:43:29,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:43:29,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:43:30,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:43:30,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:43:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:43:30,019 INFO L82 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2020-11-29 19:43:30,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:43:30,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98230522] [2020-11-29 19:43:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 19:43:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:43:31,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:43:31,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:43:42,632 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 19:43:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:43:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:44:09,274 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2020-11-29 19:44:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:44:11,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98230522] [2020-11-29 19:44:11,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:44:11,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-29 19:44:11,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159031502] [2020-11-29 19:44:11,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:44:11,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:44:11,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:44:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=67, Unknown=3, NotChecked=16, Total=110 [2020-11-29 19:44:11,477 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand 11 states. [2020-11-29 19:44:15,443 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from false [2020-11-29 19:44:18,204 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_fmod_double_~y (_ +zero 11 53))) is different from true [2020-11-29 19:44:27,486 WARN L838 $PredicateComparison]: unable to prove that (and (not (fp.eq |c_ULTIMATE.start_fmod_double_#res| |c_ULTIMATE.start_fmod_double_#res|)) (= (_ bv1 32) |c_ULTIMATE.start_isnan_double_#res|) (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |c_ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0))))) is different from false [2020-11-29 19:44:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:44:40,412 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2020-11-29 19:44:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:44:40,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2020-11-29 19:44:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:44:40,454 INFO L225 Difference]: With dead ends: 57 [2020-11-29 19:44:40,454 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:44:40,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=28, Invalid=68, Unknown=6, NotChecked=54, Total=156 [2020-11-29 19:44:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:44:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 19:44:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 19:44:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2020-11-29 19:44:40,478 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2020-11-29 19:44:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:44:40,479 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2020-11-29 19:44:40,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:44:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2020-11-29 19:44:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:44:40,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:44:40,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:44:40,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:44:40,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:44:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:44:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2020-11-29 19:44:40,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:44:40,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272369239] [2020-11-29 19:44:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 19:44:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:40,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:44:41,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:44:41,182 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 19:44:41,182 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:44:41,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 19:44:41,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:44:41 BoogieIcfgContainer [2020-11-29 19:44:41,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:44:41,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:44:41,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:44:41,435 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:44:41,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:43:28" (3/4) ... [2020-11-29 19:44:41,437 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:44:41,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_afe97365-bb89-47d9-ab40-d278e6bc2559/bin/uautomizer/witness.graphml [2020-11-29 19:44:41,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:44:41,505 INFO L168 Benchmark]: Toolchain (without parser) took 78052.22 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 45.3 MB in the beginning and 74.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,506 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 46.0 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:44:41,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.66 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 45.2 MB in the end (delta: 6.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.76 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 42.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,508 INFO L168 Benchmark]: Boogie Preprocessor took 54.38 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 40.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,509 INFO L168 Benchmark]: RCFGBuilder took 4195.00 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 40.4 MB in the beginning and 75.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,509 INFO L168 Benchmark]: TraceAbstraction took 73216.35 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 35.4 MB in the end (delta: 39.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,511 INFO L168 Benchmark]: Witness Printer took 69.70 ms. Allocated memory is still 94.4 MB. Free memory was 35.4 MB in the beginning and 74.9 MB in the end (delta: -39.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:44:41,517 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 46.0 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.66 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 45.2 MB in the end (delta: 6.0 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.76 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 42.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.38 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 40.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4195.00 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 40.4 MB in the beginning and 75.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73216.35 ms. Allocated memory is still 94.4 MB. Free memory was 74.6 MB in the beginning and 35.4 MB in the end (delta: 39.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.70 ms. Allocated memory is still 94.4 MB. Free memory was 35.4 MB in the beginning and 74.9 MB in the end (delta: -39.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND FALSE !((hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000)) VAL [one_fmod=1.0, Zero_fmod={2:0}] [L48] COND TRUE hx <= hy VAL [one_fmod=1.0, Zero_fmod={2:0}] [L49] COND TRUE (hx < hy) || (lx < ly) [L50] return x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L176] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1121a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 73.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 2 SDslu, 336 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 49.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 7 QuantifiedInterpolants, 2549 SizeOfPredicates, 11 NumberOfNonLiveVariables, 132 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...